First Alert Auto Fire Extinguisher UL rated 5-B:C (Red) UL rated class 5-B:C effective against flammable liquid fires and live electrical equipment fires. Secure car extinguisher mounting bracket, extra stability added to prevent damage in a vehicle; easy mounting. Easy-test extinguisher pressure check push button to check pressure; if button pops back up, unit is full and ready to use. Also has a 10-year limited warranty. The First Alert Auto Fire Extinguisher is for you if: You want fire protection in your car. You want a compact car fire extinguisher that is ideal for safety in your auto or vehicle. First Alert AUTO5 Fire Extinguisher.